Lee Kang Joo is a single mother who was abandoned by her previous boyfriend, Yoo Ho Nam. Ho Nam did not know that Kang Joo was pregnant with his child and went abroad to study. When Ho Nam returns to Korea, Kang Joo tries to cover up the fact that Byul is their daughter. Choi Seung Hun is the son of Jung Soo Hee who is Kang Joo's mentor and boss. He
